An oscilloscope which is designed to monitor composite video and sync signals. (see Synchronization)
A specialized oscilloscope for displaying video signal levels and timing.
The Waveform monitor is an oscilloscope that has been configured for television monitoring. It is used to measure the voltage of the signal and to check that all the pulses and scans of the signal are occurring at the proper times. Brightness of the image is measured using a waveform monitor.